SeaDataNet Common Data Index (CDI)

The selected data set is described below with metadata. Access to the data set itself can be requested via the SeaDataNet portal that gives an overview and access to marine and ocean data sets acquired and managed by European organisations. Go to: https://www.seadatanet.org

Details

    What?
    Data set nameLIDAR_08_SLIGO_BAY_14M_LAT_WGS84
    Discipline
    Parameter groups
    Discovery parameter
    GEMET-INSPIRE themesOceanographic geographical features
    AbstractTenix LADS were awarded a tender to carry out a bathymetric LiDAR survey by Geological Survey of Ireland (GSI) as part of the Integrated Mapping for the Sustainable Development of Ireland’s Marine Resource (INFOMAR) project in 2008. Tenix LADS then commissioned Blom Aerofilms to capture the Bathymetric and topographic LiDAR data, along with aerial imagery in 3 of the project areas that had been awarded. The 3 areas awarded to Blom Aerofilms was a number of shallow almost land-locked bays making up the larger project areas. The requirement of the survey was to collect bathymetric data from the coastline to a minimum depth of 10 meters which meets IHO Order 1 standards for position and depth. Digital imagery and seabed reflectivity data were also required. Depths were to be reported relative to Malin Head datum. A second data set relative to Lowest Astronomical Tide (LAT) was also to be provided for charting purposes. The aerial acquisition of the laser data used the HawkEye Mk II airborne Bathymetric LiDAR System. In addition to the airborne acquisition, a number of ground surveys for Quality Control were carried out. The data was initially collected on the ETRF89 (WGS84) datum and processed on ellipsoid heights. The ellipsoid heights were transformed to an orthometric datum via the OSGM02 geoid model and various offsets. The primary vertical datum for the project was Malin Head with a secondary data set produced relative to LAT (Lowest Astronomical Tide) datum. Data was collected on the GRS80 ellipsoid, and transformed using the OSGM02 geoid model. Corrections were then made for the differences between the MSL to Malin Head datum at each survey site. As part of a second additional QC check, 6 bathymetric surveys were carried out; 2 in each bay, to provide a check against the LiDAR data for the accuracy of the vertical coordinate in the sea areas. The sea control surveys were carried out by Aquafact. Please reference the INFOMAR projects when the data is used in publications & presentations. Visit http://www.infomar.ie for more information. All of this data & reports can be downloaded free of charge in a variety of formats from https://jetstream.gsi.ie/iwdds/map.jsp
    Related EDMED datasetINFOMAR Seabed Survey Lidar Surveyed Areas
    Data format
    Data size 36.000 MB
    Data set creation date20171017
    Where?
    Map
    © OpenStreetMap contributors
    GML idms01
    GML objects
    NameDescription
    BoundaryBoundary
    DatumWorld Geodetic System 84
    Measuring area typesurface
    Minimum instrument depth (m)-55.61
    Maximum instrument depth (m)18.49
    Sea regions
    Location qualificationLandward side of the 12 NM boundary
    MSFD areasNorth East Atlantic Ocean
    When?
    Start date20080418
    Start time08:30:00
    End date20080502
    End time18:00:00
    How?
    Instrument/gear category
    Platform type
    Cruise name08 Sligo Bay
    Alternative cruise name08_Sligo_Bay
    Cruise start date20080418
    Who?
    Data originatorGeological Survey Ireland
    Data custodianGeological Survey Ireland
    How to get data?
    Data DistributorGeological Survey Ireland
    Database referenceGSI’s data can be downloaded free of charge in various formats from https://jetstream.gsi.ie/iwdds/
    Access/ordering of dataweb data access with registration
    Access restriction
    Other info
    Quality info
    NameDateComment
    COMMISSION REGULATION (EC) No 1205/2008 of 3 December 2008 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards metadata2008-12-04See the referenced specification
    COMMISSION REGULATION (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services2010-12-08See the referenced specification
    QI_Horizontal2017-10-03smaller than 20m
    QI_Purpose2017-10-03Hydrographic survey or compatible with hydrographic standards
    QI_Vertical2017-10-03Lidar, SBES High Frequency
    LineageThe data centres apply standard data quality control procedures on all data that the centres manage. Ask the data centre for details.
    CDI-metadata
    CDI-record id1182902
    Version0 
    CDI-record initial import date2011-06-03 13:12:06.017
    CDI-record last update2017-10-19 20:55:04.937
    Point of contactGeological Survey Ireland
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